AASHTO R 88-18 PDF Download

AASHTO R 88-18 is a standard practice that provides guidelines for collecting the transverse pavement profile using automated measurement devices. The standard emphasizes the importance of measuring the profile in relation to a level horizontal reference in pavement surfaces. The collected profile data can be used to assess various pavement distresses and characteristics such as transverse deformation, rutting, water entrapment, and edge drop-off.

The standard does not provide specific specifications for the equipment or instruments used for measurement. Instead, it requires the equipment to be validated and meet the functionality requirements outlined in the standard. This approach allows for flexibility and encourages the use of innovative methods, as long as they can produce the desired data set that supports a wide range of interpretation methods.